As a follow up to a very old post about whether or not a party has to level up as soon as possible and me asking because a mate of mine was and still is part of a group that didn't want to advance to 6th level because their level would be too high for them to do severs very good adventures I've realized that the reason that some adventures will challenge a 5th level party but not A 6th level party
I realized that reason that the adventures in question would challenge a 5th level party but wouldn't challenge a 6th level party is that 6th level Clerics and 6th level Magic Users get 2 3rd level Spells per day but 5th level Clerics and 5th level Magic Users only get 1 3rd level Spell and somehow being able to cast 2 3rd level spells per day rather then 1 3rd level spell per day is what makes the difference between the adventure being a challenge and it not being a challenge
I realized that reason that the adventures in question would challenge a 5th level party but wouldn't challenge a 6th level party is that 6th level Clerics and 6th level Magic Users get 2 3rd level Spells per day but 5th level Clerics and 5th level Magic Users only get 1 3rd level Spell and somehow being able to cast 2 3rd level spells per day rather then 1 3rd level spell per day is what makes the difference between the adventure being a challenge and it not being a challenge